Add tests to install built wheels and build some examples

Augment coin_test_instructions.py to run a new script
testing/wheel_tester.py, which tries to pip install the built
wheels, and then tries to build the samplebinding and
scriptableapplication examples.

This allows us to confirm that the generated wheels are actually
installable, and also hopefully prevent us from breaking the
embeddable examples, by making sure that they at least build
(and execute in the case of samplebinding).

The change also modifies the examples to be able to take the
python executable as build argument, so that wheel_tester
can specify explicitly which python interpeter to use.

Change-Id: I0f141e40ab86e3311dd25915c4e53b0af36aaae9
Reviewed-by: Christian Tismer <tismer@stackless.com>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

3 files changed, 32 insertions, 14 deletions

diff --git a/examples/samplebinding/CMakeLists.txt b/examples/samplebinding/CMakeLists.txt
index f5212c449..3852ed36f 100644
--- a/examples/samplebinding/CMakeLists.txt
+++ b/examples/samplebinding/CMakeLists.txt
@@ -40,7 +40,11 @@ set(generated_sources
 
 
 # ================================== Shiboken detection ======================================
-
+# Use provided python interpreter if given.
+if(NOT python_interpreter)
+    find_program(python_interpreter "python")
+endif()
+message(STATUS "Using python interpreter: ${python_interpreter}")
 
 # Macro to get various pyside / python include / link flags and paths.
 # Uses the not entirely supported utils/pyside2_config.py file.
@@ -52,7 +56,8 @@ macro(pyside2_config option output_var)
     endif()
 
     execute_process(
-      COMMAND python "${CMAKE_SOURCE_DIR}/../utils/pyside2_config.py" ${option}
+      COMMAND ${python_interpreter} "${CMAKE_SOURCE_DIR}/../utils/pyside2_config.py"
+              ${option}
       OUTPUT_VARIABLE ${output_var}
       OUTPUT_STRIP_TRAILING_WHITESPACE)
 
diff --git a/examples/scriptableapplication/CMakeLists.txt b/examples/scriptableapplication/CMakeLists.txt
index 71e7869ab..215d08961 100644
--- a/examples/scriptableapplication/CMakeLists.txt
+++ b/examples/scriptableapplication/CMakeLists.txt
@@ -14,6 +14,12 @@ set(CMAKE_CXX_STANDARD 11)
 # Find required Qt packages.
 find_package(Qt5 5.9 REQUIRED COMPONENTS Core Gui Widgets)
 
+# Use provided python interpreter if given.
+if(NOT python_interpreter)
+    find_program(python_interpreter "python")
+endif()
+message(STATUS "Using python interpreter: ${python_interpreter}")
+
 # Macro to get various pyside / python include / link flags.
 macro(pyside2_config option output_var)
     if(${ARGC} GREATER 2)
@@ -23,7 +29,8 @@ macro(pyside2_config option output_var)
     endif()
 
     execute_process(
-      COMMAND python "${CMAKE_SOURCE_DIR}/../utils/pyside2_config.py" ${option}
+      COMMAND ${python_interpreter} "${CMAKE_SOURCE_DIR}/../utils/pyside2_config.py"
+              ${option}
       OUTPUT_VARIABLE ${output_var}
       OUTPUT_STRIP_TRAILING_WHITESPACE)
 
diff --git a/examples/scriptableapplication/pyside2.pri b/examples/scriptableapplication/pyside2.pri
index a2dc516cf..2da3bc880 100644
--- a/examples/scriptableapplication/pyside2.pri
+++ b/examples/scriptableapplication/pyside2.pri
@@ -1,36 +1,42 @@
 PYSIDE_CONFIG = $$PWD/../utils/pyside2_config.py
 
-SHIBOKEN2_GENERATOR = $$system(python $$PYSIDE_CONFIG --shiboken2-generator-path)
+# Use provided python interpreter if given.
+isEmpty(python_interpreter) {
+    python_interpreter = python
+}
+message(Using python interpreter: $$python_interpreter)
+
+SHIBOKEN2_GENERATOR = $$system($$python_interpreter $$PYSIDE_CONFIG --shiboken2-generator-path)
 isEmpty(SHIBOKEN2_GENERATOR): error(Unable to locate the shiboken2-generator package location)
 
-SHIBOKEN2_MODULE = $$system(python $$PYSIDE_CONFIG --shiboken2-module-path)
+SHIBOKEN2_MODULE = $$system($$python_interpreter $$PYSIDE_CONFIG --shiboken2-module-path)
 isEmpty(SHIBOKEN2_MODULE): error(Unable to locate the shiboken2 package location)
 
-PYSIDE2 = $$system(python $$PYSIDE_CONFIG --pyside2-path)
+PYSIDE2 = $$system($$python_interpreter $$PYSIDE_CONFIG --pyside2-path)
 isEmpty(PYSIDE2): error(Unable to locate the PySide2 package location)
 
-PYTHON_INCLUDE = $$system(python $$PYSIDE_CONFIG --python-include-path)
+PYTHON_INCLUDE = $$system($$python_interpreter $$PYSIDE_CONFIG --python-include-path)
 isEmpty(PYTHON_INCLUDE): error(Unable to locate the Python include headers directory)
 
-PYTHON_LFLAGS = $$system(python $$PYSIDE_CONFIG --python-link-flags-qmake)
+PYTHON_LFLAGS = $$system($$python_interpreter $$PYSIDE_CONFIG --python-link-flags-qmake)
 isEmpty(PYTHON_LFLAGS): error(Unable to locate the Python library for linking)
 
-SHIBOKEN2_INCLUDE = $$system(python $$PYSIDE_CONFIG --shiboken2-generator-include-path)
+SHIBOKEN2_INCLUDE = $$system($$python_interpreter $$PYSIDE_CONFIG --shiboken2-generator-include-path)
 isEmpty(SHIBOKEN2_INCLUDE): error(Unable to locate the shiboken include headers directory)
 
-PYSIDE2_INCLUDE = $$system(python $$PYSIDE_CONFIG --pyside2-include-path)
+PYSIDE2_INCLUDE = $$system($$python_interpreter $$PYSIDE_CONFIG --pyside2-include-path)
 isEmpty(PYSIDE2_INCLUDE): error(Unable to locate the PySide2 include headers directory)
 
-SHIBOKEN2_LFLAGS = $$system(python $$PYSIDE_CONFIG --shiboken2-module-qmake-lflags)
+SHIBOKEN2_LFLAGS = $$system($$python_interpreter $$PYSIDE_CONFIG --shiboken2-module-qmake-lflags)
 isEmpty(SHIBOKEN2_LFLAGS): error(Unable to locate the shiboken libraries for linking)
 
-PYSIDE2_LFLAGS = $$system(python $$PYSIDE_CONFIG --pyside2-qmake-lflags)
+PYSIDE2_LFLAGS = $$system($$python_interpreter $$PYSIDE_CONFIG --pyside2-qmake-lflags)
 isEmpty(PYSIDE2_LFLAGS): error(Unable to locate the PySide2 libraries for linking)
 
-SHIBOKEN2_SHARED_LIBRARIES = $$system(python $$PYSIDE_CONFIG --shiboken2-module-shared-libraries-qmake)
+SHIBOKEN2_SHARED_LIBRARIES = $$system($$python_interpreter $$PYSIDE_CONFIG --shiboken2-module-shared-libraries-qmake)
 isEmpty(SHIBOKEN2_SHARED_LIBRARIES): error(Unable to locate the used shiboken2 module shared libraries)
 
-PYSIDE2_SHARED_LIBRARIES = $$system(python $$PYSIDE_CONFIG --pyside2-shared-libraries-qmake)
+PYSIDE2_SHARED_LIBRARIES = $$system($$python_interpreter $$PYSIDE_CONFIG --pyside2-shared-libraries-qmake)
 isEmpty(PYSIDE2_SHARED_LIBRARIES): error(Unable to locate the used PySide2 shared libraries)
 
 INCLUDEPATH += "$$PYTHON_INCLUDE" $$PYSIDE2_INCLUDE $$SHIBOKEN2_INCLUDE